most kennels it is more common in the months of July and
August, although it often comes on in the very dead of winter. Puppies,
if overfed, will often be seized with this troublesome complaint. A
healthy puppy hardly ever knows when it has had enough, and it will,
moreover, stuff itself with all sorts of garbage; acidity of the
stomach follows, with vomiting of the ingesta, and diarrhoea succeeds,
brought on by the acrid condition of the chyme, which finds its way
into the duodenum. This stuff would in itself act as a purgative, but
it does more, it abnormally excites the secretions of the whole
alimentary canal, and a sort of sub-acute mucous inflammation is set
up. The liver; too, becomes mixed up with the mischief, throws out a
superabundance of bile, and thus aids in keeping up the diarrhoea.

Among other causes, we find the eating of indigestible food, drinking
foul or tainted water, too much green food, raw paunches, foul kennels,
and damp, draughty kennels.

_Symptoms_--The purging is, of course, the principal symptom, and the
stools are either quite liquid or semi-fluid, bilious-looking,
dirty-brown or clay-coloured, or mixed with slimy mucus. In some cases
they resemble dirty water. Sometimes, as already said, a little blood
will be found in the dejection, owing to congestion of the mucous
membrane from liver obstruction. In case there be blood in the stools,
a careful examination is always necessary in order to ascertain the
real state of the patient. Blood, it must be remembered, might come
from piles or polypi, or it might be dysenteric, and proceed from
ulceration of the rectum and colon. In the simplest form of diarrhoea,
unless the disease continues for a long time, there will not be much
wasting, and the appetite will generally remain good but capricious.

In bilious diarrhoea, with large brown fluid stools and complete loss
of appetite, there is much thirst, and in a few days the dog gets
rather thin, although nothing like so rapidly as in the emaciation of
distemper.

_The Treatment_ will, it need hardly be said, depend upon the cause,
but as it is generally caused by the presence in the intestine of some
irritating matter, we can hardly err by administering a small dose of
castor oil, combining with it, if there be much pain--which you can
tell by the animal's countenance--from 5 to 20 or 30 drops of laudanum,
or of the solution of the muriate of morphia. This in itself will
often suffice to cut